a:10:{i:0;s:8:"class_id";i:1;s:10:"class_name";i:2;s:9:"parent_id";i:3;s:7:"sort_no";i:4;s:10:"profession";i:5;s:9:"emergency";i:6;s:11:"create_time";i:7;s:11:"show_status";s:3:"_pk";s:8:"class_id";s:5:"_type";a:8:{s:8:"class_id";s:15:"int(6) unsigned";s:10:"class_name";s:12:"varchar(100)";s:9:"parent_id";s:15:"int(6) unsigned";s:7:"sort_no";s:15:"int(6) unsigned";s:10:"profession";s:12:"varchar(255)";s:9:"emergency";s:7:"char(1)";s:11:"create_time";s:16:"int(10) unsigned";s:11:"show_status";s:19:"tinyint(2) unsigned";}}